JPS6052768A - Method and device for automatically controlling quality of fiber yarn - Google Patents

Abstract

The present invention concerns a method and an apparatus for quality control of textile threads, and particularly of threads produced by different spinning methods. The apparatus comprises a housing (10) containing two measurement modules. A first module comprises a double condenser (32) and its associated electronic circuit to determine uniformity of linear mass of the thread, a precision scale (31) to determine linear mass and a drive means (33). The second module comprises a device (34) and a device (37) which cooperate to determine twist and elastic recovery of the thread. A manipulator (17) allows automatic positioning of the test pieces of thread (46) admitted into the apparatus through flexible tubes (16). The apparatus offers the advantage of permitting a series of measurements to be taken and computer processed for purposes of statistical compilation and/or memory storage.

Description

DETAILED DESCRIPTION OF THE INVENTION Field of the Invention The present invention relates to a method for automatic quality control of fiber yarns and an apparatus for implementing this method.

(Prior Art) Traditional continuous ring spinning machine or free fiber end spinning method (Free-FibCr EndSpi)
As yarns are manufactured by various spinning methods, such as spinning, spinning, hod), and improved methods thereof, quality control, especially for fiber yarns, is becoming more and more necessary.

In fact, even in the case of the same fiber, yarns made by different spinning methods will always have very different appearances and properties through mechanical and dyeing processes, and therefore their uses. However, it will be limited to one or two specific items.

In other words, even if the same yarn is made from the same raw material, if it is made using a different spinning method, it will have knots and other defects in appearance when it is woven into knitted or knitted fabrics. and cannot be sold commercially.

Moreover, if the shingori weavers manufacture the threads they use themselves, this is unlikely.

Generally, yarns made using traditional continuous ring spinning machines are
Having a well-proportioned structure, weaving and knitting can be carried out simply by controlling the strength and uniformity of unit length, even if the twist difference, if large, will cause some defects. It is possible to prevent manufacturing problems that may occur when manufacturing.

Since the current general market is supplied with yarn manufactured by various methods, controlling the strength and uniformity of strength, that is, uniformity of unit length, is insufficient to prevent defects. It is enough.

Additionally, yarns spun by the free fiber end method are structurally different from yarns produced by traditional methods, even though they are nearly identical in terms of strength, uniformity, and twist.

Moreover, even yarns spun by the free fiber end method and having the same general properties may differ in scale, degree of damage, or Since different degrees of cleanliness have different structures, the above-mentioned defects, which are visible to the naked eye, occur in knitted or knitted fabrics.

According to recent research, methods have been developed which make it possible to classify yarns and refer to their complements mathematically, in particular with respect to yarns produced by the free-fino<-end method, e.g. , ``Resistori Chixtail''(1' Indosl,, rie), published in May 1979.
Tex 1le) No. 1089, pages 421-42
R.A. Shussot (R, A,
5cuhutz) and J.Y. Doreen (J,
The paper “De la 1-Ruchode” by L.
Phil, no show detourminashi” application
A la caracterizacio de lastrictire
D'elation d
cs fj, 1es: noLi, on, dCL, e
rmin;+Lj, on.

applicaLj, on a la caracl;
erisat, ion de ] structure
et; de l'aspect), August 1979.
``Merliant Textivalichte''('M
e11.1 and Te'xt, 1berichte)
A paper by the same author as mentioned above, published on pages 656 to 659,
CharakLerjsierung der Ga
rne.

hinsichtlichihrer Verarbe
Itung und [Ej ni enscbaften] and Ite's ``Typhoidalsvercdlun''(T'extilsvercdlun) from January 1981.
g) From page 9 to page 11, t=7 /L/,
x4, published in the paper [Karaktalisierung der Garne] by R, A, 5chutz, J, '/, Drean and D, Carriere (X Ru.

(Problem to be solved by the invention) However, tests based on these traditional methods,
It has the disadvantages of being very time consuming and tedious. In fact, to date, for the reasons mentioned above, yarn quality control involves winding and weighing devices for measuring quality, especially with respect to weight, i.e. denier, at each stage of different types of tests. Separate equipment must be used, such as an adjustment device to measure the symmetry, a screw dynamometer to measure the twist, and a power side to measure the elastic recovery.

Although some of the various types of equipment commonly available on the market are automated to some extent, there are still limitations with regard to quality control.

Furthermore, taking into account the standards and limitations regarding the test methods used, in order to perform some of the measurements of
It is necessary to establish certain data obtained from other devices.

That is, as a prerequisite for certain types of measurements, such as twist, elastic recovery, etc., the voltage must be measured as a function of the denier value, which is known in advance or is being measured.

On the one hand, measurements according to certain types are unsuitable for the classification of yarns, and on the other hand, measurements according to certain types are very time-consuming and require operator intervention or) interruptions. However, it is important to consider quality control by other suitable methods and metrology systems.

(Means for Solving the Problems) The object of the present invention is to overcome the above-mentioned drawbacks and to provide the textile industry with a method for automatic quality control of textile yarns, and to The object of the present invention is to provide a simple and effective device for carrying out the method, which makes it possible to carry out the multiple measurements necessary for accurate classification of yarns.

To achieve this objective, the method for automatic quality control of textile yarns according to the invention automatically performs a series of determinations on at least one yarn specimen using a single device, The measurement measures at least the denier and unit length uniformity of the yarn, and/or at least the twist and elastic recovery of the yarn; It is characterized by being able to perform continuous measurements on test pieces, and by being able to statistically process and store the measurement results.

In the method according to the invention, a first measurement for determining the denier value and the unit length uniformity is carried out on at least one yarn specimen in a first module;
and a second measurement defining the twist and elastic recovery force is a second measurement.
The test is carried out on at least one yarn specimen in the module.

The first and second measurements performed in two separate modules are performed simultaneously on two separate specimens of the same or different yarns.

In order to carry out these measurements effectively, the end of each specimen is placed in a predetermined initial position so that several thread specimens can be successively introduced into one measuring module. Then, each test piece is taken into the apparatus according to the present invention, and a series of measurements are carried out consecutively using the measuring device in the same module, and when a predetermined number of measurements are completed, e.g. If a statistically accurate result is obtained even before the measurement is completed, the measurement is stopped at that point.

In part, the placement of the yarn specimen before the start of the measurement.

An air jet may be used to automatically introduce each test strip into the device and, partially manually, the free end of each test strip may be placed in its respective predetermined position within the device.

] In the first step of the measurement, each end of the two thread specimens is automatically held in place in succession.
and each automatically incorporated into one of the two measurement modules.

Since the open side device is arranged in a special jfff manner, the two test specimens are placed directly in front of each other when measuring in each module.

Furthermore, the lint and the immediately measured specimen are automatically suctioned out.

The automatic quality control device for fiber yarns according to the invention comprises a measuring device for measuring the denier value and/or unit length uniformity of at least one yarn specimen.
one measuring module and another measuring module comprising a measuring device for measuring the twist and/or elastic recovery of at least one yarn specimen.
a case or housing comprising a number of measurement modules, and further comprising a device for automatically re-performing the above-mentioned measurements on multiple specimens made of the same yarn in succession, and a storage device for storing the measurement results. a device for storing and/or processing the data obtained from the definition;
and a processing device for storing data.

In the apparatus according to the present invention, the module comprises a measuring device for measuring the uniformity of the denier value of the yarn using a circuit, a measuring device for measuring the denier value of the yarn, and a driving device, and further, These three devices are arranged along the same vertical axis and are provided in such a way that they can simultaneously determine the quality and uniformity of quality of the yarn.

The measuring device for determining the uniformity of denier values consists of a double wall having a central plate and two side plates defining two passages through which the yarn being tested may pass. It includes a capacitor and an electronic control circuit connected to the capacitor.

This electronic control circuit consists of an oscillator that applies alternating current voltages with opposite phases to each other to the two side plates, an amplifier and modulator that detect voltage changes on the center plate, and a connection circuit consisting of each plate of the double capacitor. an inverse feedback circuit consisting of an analog-to-digital converter and a digital-to-analog converter for adjusting the resulting instability, and said modulator statistically processes the measurement results and/or It is connected to a central processing unit for storage.

The drive device, which cooperates with the two measuring devices related to the first module, is mounted on a U-shaped box-shaped member fixed to a plate, a drive cylinder connected to a stepper motor, and a suppression cylinder having an anti-slip surface. and the suppression cylinder is equipped with a device that always presses down its outer circumferential surface against the outer circumferential surface of the drive cylinder with a constant pressure.

In order to be able to automatically insert the thread between the suppression cylinder and the drive cylinder, the drive cylinder is provided with at least one axial groove on its outer circumferential surface and an axial groove. It is advantageous to have a plurality of grooves arranged side by side in the direction.

According to the invention, the device for measuring the denier value is arranged on a flat extension that is integral with the lifting plate and is continuous with the container that receives the yarn to be measured over its entire length. An output device is provided for outputting measurement results corresponding to the measurements performed, and the measurement results are transmitted to a processing device for statistical processing and/or recording in a storage device.

a second module for measuring the degree of twist and elastic recovery of at least one specimen; and a clamping device comprising forceps arranged to hold one end of the thread of the test piece; an energy storage device for moving the clamping device upwardly along a vertical opening provided in the lifting plate; It consists of mechanical equipment.

A mechanical device for moving the clamping device upwardly comprises a stepper motor and a vertical screw coupled to and rotated by the stepper motor and coupled to the clamping device for moving it vertically. Become.

In order to prevent contamination of the device with lint or measured specimens, it is advantageous to have a device for automatically suctioning and discharging lint or the like.

Furthermore, in the two measurement modules, in order to process two test specimens simultaneously, a first area for the specimen measured by the first measurement module and a test area for the test specimen measured by the second measurement module are provided. Advantageously, it is provided with a deflector which divides into two separate areas with a second area for the pieces.

The work of placing the thread to be measured in each measurement module is as follows:
a rotating disk; a guide member slidably mounted on two rails vertically disposed on the disk; a shaft slidable within the guide member; and a shaft slidable within the guide member; an operating arm attached to the end and having sharp forceps for lifting the thread from its initial position and moving it to the measuring device and/or cutting it to a predetermined length, and controlled by a central processing unit. This is done by an autopilot system.

It is also advantageous if the device according to the invention is provided with a toothing or a rake on the outside of the housing in which the -fti measuring device is provided.

This toothed stand consists of a frame stand having multiple shafts for holding a bobbin of yarn to be measured, and a suction tube that sucks up the yarn and introduces it into the inside of the device via a thin flexible tube. .

(Examples) Examples of the present invention will be described in detail below with reference to the accompanying drawings.

As shown in FIG. 1, an automatic quality control device (
1) is a vertical lifting plate (1) that supports a set of measurement equipment.
1) a casing or housing (10) comprising;
A front opening (12), preferably transparent, allowing access to the measuring device and a device (13a) for controlling the drive device.
) and a base (13) comprising a central processing unit (13b).

A console of known type (not shown), equipped with a keyboard and a cathode screen for inputting data, is connected to the first illustrated device.

The housing (10) is preferably made of a rigid metal plate or a synthetic plate and is attached to the frame.

However, it is possible to modify the housing of this embodiment depending on usage conditions or operational or manufacturing requirements.

The upper plate (14) of the housing holds the thread test piece in the device (1).
It is provided with a series of openings (15) through which flexible tubes (16) are moved.

The specimen is guided from the platform shown in FIG. 2 in a manner detailed below. The test strip passes through the tube (16) and its end is manually cut and placed by a suitable forceps or clamping device as shown in FIG.

The vertical lifting fJij (11) is 3 perpendicular to it.
It is movable along the axis of the book and is equipped with an electronically controlled autopilot device (17).

The autopilot comprises, in a well-known manner, a disc which is supported on a platform (not shown) and pivots in both directions in the direction of the arrows about an axis (19) mounted on the back surface of a lifting plate (11). (18) and an operating arm (20) mounted at right angles to the free end of a stem (21) movable in both directions of arrow B.

The stem (21) is a guide member (22) supported by two rails (23) (24) mounted between the disc (18) and the angle support member (25) supported thereby. is supported by.

The disk (18) is rotated by a stepper drive motor (not shown) provided on the back surface of the lifting plate (11).

The guide member (22) has a screw (26) which is rotated in both directions indicated by the arrow by another stepper motor (not shown).
, and move in either direction of arrow C in relation to its direction of rotation.

A stepper motor (not shown) suspended between both ends of the stem (21) and disposed within or supported by the guide member (22) rotates in either the forward or reverse direction. The chain (
27) causes the stem (21) to move.

The free end of the operating arm (20) is equipped with forceps (2) for holding and/or cutting the test piece to be measured.
9) is provided. Since the forceps themselves are unrelated to the essence of the present invention, a detailed explanation thereof will be omitted.

The autopilot (17) is able to lift the end of the thread previously placed in the initial position in the forceps shown in the third figure, which is arranged along a predetermined circular arc (30).

The first measurement module installed vertically on the left side of the device (1) shown in FIG. 1 consists of a precision measuring instrument (31) shown in FIG. The measuring device consists of a double capacitor (32) shown in FIGS. 4 and 5, which will be described later, and a circuit that cooperates with the double capacitor (32), which will be described later. It consists of a drive device (33) shown in FIG.

A second measuring module installed vertically on the right side of the device (1) shown in the first figure has a stepper drive motor ( a device (34) consisting of (35) and forceps (38) for holding the other end of the test piece whose twist is to be measured.
It consists of a device equipped with [1 (37)].

The device (37) can be moved axially between the position shown in solid lines and the position (39) shown in dotted lines in FIG. This movement is made possible by a longitudinal opening (40) provided in the lifting plate (11).

The device (37) will be described in detail later with reference to FIG.

As mentioned above, as shown in FIG. 2, it consists of a main body (41), for example formed of a soldered metal member, from which the thread is guided from a support, usually called a rack.

In this example, one body (41) consists of a series of stems (43) on which a bobbin (44) of thread to be tested is wound individually.
There are four horizontal members (42) each having a.

As shown in FIG. 2, the sizes and shapes of bobbins vary, and their quantity varies greatly depending on the size of the rank. In reality, the number of bobbins to be attached is preferably 24 at most.

Above each bobbin (44) a suction tube (45) is arranged which communicates with a flexible tube (16) that reaches the quality control device.

In order to suction the manually placed thread (46) into the inlet of the corresponding suction tube (45) and continue to guide it into the housing /If (10), compressed air is directed in the direction of arrow E in FIG.
It is injected from the side into the tube (16) as shown in FIG.

Suction is controlled by a handle or lever (47) attached to the cross member on the top of the body (41). Said lever controls a valve communicating between a conduit (48) for injecting compressed air tangentially into the tube (16) and a source of compressed air (not shown).

Although said rack is not essential in terms of the functioning of the quality control device according to the invention, it is a very important accessory in order to automatically test a large number of different yarns.

Once the thread has been guided into the second part of the housing (10) of the device (1), it is manually placed between the attachment members (49) (50) of the forceps (51) shown in the third figure.

Each forceps (51) has an opening (53) in the support member (54).
It consists of two mounting members, each having a cylindrical rear part (52) that fits inside, and a bullet-shaped front part (55), separating the front part (55) and the rear part (52). An intermediate section (56) of small diameter is provided.

Two mounting members (4!) forming the forceps (51) (
50) are arranged in parallel and are fitted into two mutually communicating openings (53), with a slight play between them.

Permanent magnets (57) are arranged in suitable openings in a support member (54) made of non-magnetic material in aluminum or synthetic material, thereby allowing the two mounting members (49) (50) can be automatically adjusted and locked.

The thread (46) guided through a tube (16) arranged in a semi-cylindrical opening (58) of the support member (54) has a self-adjusting function by the action of a magnet (57) and a mounting member. (4
9) The attachment members (49) of the forceps (51) are clamped by the (50) due to the play created between the cylindrical rear part (52) of (50) and the opening (53) that holds them. .

Each support member (54) is provided with four forceps (51). Each support member (54) is connected to the device (
1) is arranged on the circular arc (30).

When the thread is held between the surface mounting members of the forceps (51),
It will be placed in the initial position, and the autopilot (
17) is activated, and the thread is ready to be introduced into each measuring device.

FIG. 4 shows one of the measuring devices.

The device consists of a double capacitor connected to a measuring circuit shown in Figure 5, which compares the gusts of a thread of a given length (for example 5 mm) by measuring its capacitance.

The double capacitor (60) has two passages (64) (
65). Center plate (61) and dual side plate (62)
) (63). Only air is present in the passageway (65), and the thread (46) is arranged in the passageway (64).

As shown in FIG. 5, the double capacitor (60) forms part of a connection circuit whose equilibrium state depends on the mass of the thread in the channel (64). Said connection circuit consists of an oscillator (66) connected to two amplifiers (67) (6g) for supplying mutually antiphase signals to the two side plates (62) (63).

When the double capacitor (60) is empty, its capacitance can be adjusted by means of two adjustment capacitors (69) (70).

If the charges on both double capacitors (60) are equal, no voltage will be registered on the center plate (61). On the other hand, if both charges are different, the voltage on the center plate (61) is amplified by the amplifier (71) and transmitted to one input of the analog-to-digital exchanger (72), and the voltage on the center plate (61) is amplified by the amplifier (71) and transmitted to one input of the analog-digital exchanger (72), 73) and transmitted to the central processing unit consisting of a microcomputer (74).

In this way, it is possible to measure the unit length uniformity for a relatively long test piece of, for example, 10oIIIn.
possible and the measurement results are stored and statistically processed.

The reverse feedback circuit for adjusting the unbalance state in the connection circuit consists of a digital-to-analog converter (75), the output end (76) of which is connected to the analog-to-digital exchanger (75).
72).

In order to make these measurements, the thread (46) must be passed through the passageway (64) at a fairly high speed.

The passing speed of this thread is determined by the device (33
) is controlled by

The device (33) basically consists of a drive cylinder (8o) and a suppression cylinder (81). Drive cylinder (8o
) is controlled by a stepper motor (82) whose speed is precisely controlled and whose diameter is measured, so that the length of thread unwound by the device (33) can be adjusted exactly as required. , can be calculated.

The suppression cylinder (81) includes a slip prevention surface (83) that comes into contact with the outer peripheral surface of the drive cylinder (8o).

The device (33) comprises a U-shaped mount (84) supported by a hanging plate (11).

The drive shaft (85) of the stepper motor (82) is fitted into the shaft hole (86) of the drive cylinder 3r (80).

Further, the axis of the drive cylinder (8o) is connected to a platform (87) arranged in an opening provided in a protective plate (88) connected to a mounting base (84) with a screw (89).
is supported by.

An opening (90) may be provided inside the drive cylinder (80) to reduce inertial forces.

The pressing cylinder (81) has two platforms (9
2) has an axle (91) supported by (93); The platform (92) (93) is fitted via two plugs or members (95) into a member (94) which slides under the action of two springs (96). The tension of the spring (96) can be adjusted using two adjusting screws (97).
controlled by.

The protective plate (98) is attached to the mounting base (8) by screws (99).
4), and has a protective function similarly to the protective plate (88).

A predetermined number of depressions or grooves (100) are provided on the outer circumferential edge of the suppression cylinder (81), and the thread (4G) is automatically moved into both cylinders (80) (8) by a well-known method.
).

After passing through both cylinders (80) and (81), the thread (46) passes through the plate (1) of the precision dosing device (103), as shown in FIG.
02) is housed in the upper container (101).

The precision scale (103) is supported by a flat extension (104) which is integral with the lifting plate (11).

The precision weigher measures the quality, ie the mass of a unit length of yarn, by weighing a controlled length of yarn contained in a container (101).

The weight measurement results are continuously transmitted via an output device (105) to the central processing unit for statistical processing and/or storage.

The tested thread is suctioned out by a container or suction tube (106).

Denier measurements and denier uniformity measurements are performed in the same 81 measurement module.

In this case, one common drive device is used for the two measurement devices that carry out both of these measurements. Also, the thread is placed vertically during the measurement.

And after measurement, it is automatically discharged.

As previously mentioned, the second module is equipped with a device for determining the degree of twist and elastic recovery of the yarn specimen.

The twist determination is commonly known as AFNOR J,
e) Jean-Yvas Drea, July 12, 1981, to the University Examination Committee;
n) is described in the doctoral thesis submitted by Therefore, it will not be explained in detail in this text.

This method of determination also relates to the step of knowing the previous tests, in particular the denier predetermined voltage. With electronic testing and control, denier measurements are fully automated.

The twist determination is made by a device (34) consisting of a stepper motor (35). Stepper motor (35
) controls the movement of the forceps (3G) that grips the test piece in two directions.

FIG. 9 is a partial sectional view of the control device (37).

The device (37) is attached to the support member (11) by screws (112).
) and a capacitor (110) fixed to the
: Has 11 children (36).

The support (111) is made to move vertically by means of a screw (11/I) rotating between the stands (115) and (116). The stands (115) and (116) are integral with an L-shaped member (117) and a U-shaped member (118), which are respectively connected to the lifting plate (1]).

The support moon (1], 1) comprises a grooved tube or sleeve (119) that engages a screw (114) rotating between the platform (115) and (116'). The movement of the screw (114) is controlled by a stepper motor universal joint (121).

The device (37) is used to simultaneously measure the twist and elastic recovery of the yarn.

In a first embodiment, the device (37) is connected to a motor (34).
The forceps (36) are rotated to twist the thread in two directions, while the forceps (3G) remain stationary upward.

In the second embodiment, until the thread breaks, ≦: "child (
113) is kept lowered, the forceps (3G) are stopped at 17rI. As shown, the forceps held by the capacitor (110) can be seen in front of the lifting plate (11). The support (111) slides vertically inside the hole (4o). A mechanical device for attaching the forceps (113) is located behind the lifting plate (11).

It should be noted that the method according to the invention is already computer controlled.

That is, it controls a mechanical device that initiates a preliminary step to select which of the various methods is to be applied next, as well as interpreting the results in a sequential manner.

The method according to the invention also comprises a device for controlling or aborting the measuring step depending on the initially provided data.

Also, the diachronic representation of all data can usually be represented as graphically calculated parametric variables, which is not possible with conventional methods.

For example, in addition to simply classifying the original resistance and elasticity as in the past, there are other values that are more important and effective in predicting the performance of the product during use, i.e., elastic recovery force. The modules and amount of work can be displayed graphically.

Furthermore, through information processing by a computer, the mean value, deviation, and deviation coefficient are calculated simultaneously or separately, and not only are the average values, deviations, and deviation coefficients statistically aggregated, but also other statistical mediating variables that indicate the desired degree of distribution are calculated. For example, the symmetry coefficient β□ and the distribution density coefficient β2 (Billalon coefficient) can also be edited.

By appropriately combining the depths of different measurement methods,
It has the advantage of providing the information needed to further study the special properties.

Therefore, by automatically determining the denier initially, a reference is provided for dividing the voltage and automatically using the previously used voltage.

The measurement results finally obtained determine in each individual case what quality control is necessary. That is, the number of measurements to be made, the required M, WI accuracy, the number of bobbins or combinations thereof, the number of tests per bobbin, the number of bobbins, and any necessary or desired order or limits, etc. are determined.

It is possible to obtain data that is processed by any intermediate device such as a printer, storage device, etc.

The present invention is not limited to only the matters disclosed in the embodiments, and many modifications and variations can be made by those skilled in the art.

In particular, the device according to the invention is not limited to two measuring modules, but can also be used to determine the surface characteristics, flexibility, degree of breakage, etc.
It can also be extended to include a third module that determines the properties of the umbrella.

[Brief explanation of drawings]

FIG. 1 is a schematic perspective view of an automatic quality control device according to the present invention. FIG. 2 is a perspective view of a rack holding bobbins of thread to be tested. FIG. 3 is a perspective view of forceps for placing a test piece in an initial position inside the apparatus of FIG. 1; FIG. 4 is a perspective view of an R1 measuring device for measuring uniformity of unit length, which is installed inside the device of FIG. 1. FIG. 5 is a block diagram of a circuit connected to the "n" in FIG. 4. FIG. 6 is an elevational view of the precision measuring instrument of the H1 measuring device that measures the denier value. FIG. 7 is an elevational view of the drive of the first module. FIG. 8 is a cross-sectional view of the drive device of FIG. 7. FIG. 9 is a longitudinal sectional view of an open device for measuring elastic recovery force, which is provided in the second module of the device of FIG. 1; (1) Automatic quality control device (10) Casing, nozzle (1) Lifting plate (12) Front opening (13)
Base (14) Control device (13b) Central processing unit (14) Top plate (15) Opening (16) Pipe (17) Autopilot device (18) Disk (19) il
illll (20) Operating arm (21) Stem (22
) Guide member (23) (24) Rail (25) Support member (26)
Screw (27) Chain (28) Gear (29) Forceps (30) Arc (31) Precision measuring instrument (32) Double capacitor (33)! &lK moving device (3
4) Device (35) Stepper drive motor (36) Forceps (37) Device (38) Forceps (39) Position (40) Opening (4-piece body (42) Horizontal member (/13) Stem (44) Bobbin ( 45) 1 suction tube (46) Thread (47) Handle, lever (48) Conduit
(49) (50) Mounting member (51) Forceps (52) Rear part (53) Opening (54) Supporting member (55) Front part (5G) Middle part (57) Permanent magnet (58) Opening part (60) Two Heavy capacitor (61) Center plate (62) (
63) Side'Fi (64) (65) Passage (66) Oscillator (67) (G8) Amplifier (6G) (70) Tuning gl
Capacitor (67) (68) Amplifier (72) Analog-to-digital converter (73) Demodulator (74) Microcomputer - (7
5) Digital-to-analog converter (7G) output end (80) Drive cylinder (81) Suppression cylinder (82) Stepper motor (83) Slip prevention surface (84) Mounting base (85) Drive shaft (86) Shaft hole ( 87) Plaso I-frame 71-- (88) Protective plate (8
9) Screw (90) Opening (91) Mandrel (92) (93) Platform (
94) Components (95) Plug, block (96) Spring
(97) Adjustment screw (98) Protective plate (99) Screw (100) i-rod recess (101) cradle (102) temporary (103) precision measuring instrument (104) extension (105) output device (10G) container, Suction tube (i+, o) Capacitor (111)
Support material (112) Screw (113) Forceps (114) Screw (115) (116) Stand (117) L-shaped material (11)
8) U-shaped member (119) Sleeve (120) Stepper motor (121) Free introduction; manual procedure amendment book walking type) Manabu Shiga, Commissioner of the Japan Patent Office, October 4, 1980 1, Indication of the case 1988 patent Application No. 126553 2. Name of the invention: Automatic quality control method and device for fiber yarn 3. Relationship with the person making the amendment. Patent applicant name: Superba Société Anonymous (Date of dispatch: September 25, 1980) 6. Amendment Subject to full statement

Claims (20)

[Claims] (1) A single device can automatically perform multiple measurements on one yarn specimen, and through said measurements, the denier value and unit length uniformity of the yarn can be determined by at least one A method for automatic quality control of fiber yarns for measuring the twist and elastic recovery of the yarn at least once and/or for measuring the twist and elastic recovery of the yarn at least once, the method comprising: A method characterized in that the results of the measurement are recorded in a storage device, and the results are processed by a computer in order to be statistically processed and stored. . (2) Measure the denier value and unit length uniformity of at least one test piece in the first module, and measure the twist and elastic recovery force of at least one test piece in the second module. A method according to claim (1), characterized in that: (3) 2, each made of the same thread or different threads
For each test piece, in each module,
The method according to claim 2, characterized in that the measurements are carried out simultaneously. (4) Introducing a plurality of consecutive test specimens into the apparatus so that their ends are respectively placed at the initial position, and continuously introducing them into one measurement module from the initial position. , the measurement is carried out continuously and repeatedly on each test piece by a tester in the same module, and statistical accuracy is obtained at the end of a predetermined number of measurements or before reaching a predetermined number of measurements. 2. The method according to claim 1, wherein the measurement is stopped at the point in time when the measured value is reached. (5) The test piece is automatically introduced into the apparatus by an air jet, and the free end of the test piece is manually placed in each initial position.
The method described in section. (6) Each end of the two test specimens is automatically and successively lifted from their respective initial positions, and each of the ends is introduced into one measurement module. A method according to claim (2). (7) The method according to claim (1), wherein the measurement is carried out while holding the test piece vertically within each module. (8) The method according to claim (1), characterized in that the lint and the measured test piece are automatically discharged by suction means. (9) Apparatus (31) for measuring the denier value and/or unit length uniformity of at least one test piece
, (32); and at least one
A fiber comprising a housing (10) comprising at least two measuring modules with a second module comprising a device (35) (38) (39) for measuring the twist and/or elastic recovery force for each specimen. An automatic yarn quality control device comprising: a device that automatically repeats the measurement on a plurality of continuous test pieces made of the same yarn; a device that records the measurement results in a storage device; and a device that records the measurement results in a storage device. , a processing computer device for statistical processing or storage. (10) an electronically controlled measuring device (32) for the first module to measure the uniformity of the denier value of the yarn;
A measuring device (31) for measuring the denier value and a driving device! (33), and these three devices are arranged along the same vertical axis and work together so that they can simultaneously measure the denier value of the yarn and its uniformity. The device according to claim (9), characterized in that: (11) Measuring device for measuring the uniformity of denier values (32
) has one central plate (61) and two side plates (62) (63) defining two passages (64) (65), and the thread (4G) to be tested is located in said passages. a double capacitor (60) adapted to pass through one (65) of the
The electronic control circuit includes an oscillator (6) that applies AC voltages with opposite phases to the two side plates.
6), an amplifier (71) and a modulator (73) that detect voltage changes on the center plate (61), and a double capacitor (60) to adjust the instability of the connection circuit consisting of each plate. The modulator (73) statistically processes the measurement results and/or stores them. 11. The device according to claim 10, wherein the device is connected to a central processing unit for controlling the computer. (12) The drive device (33) has a container (84) fixed to the lifting plate (11), a drive cylinder (80) connected to the stepper drive motor, and a restraint having an anti-slip surface (83). - A device (94) (96) (97) in which the cylinder (81) is hollow and the suppression cylinder (81) presses its outer circumferential surface onto the outer circumferential surface of the drive cylinder (80) with constant pressure. A device according to claim 9, characterized in that it comprises: (13) The suppression cylinder holds the thread (46) in both cylinders (
go) at least one groove or recess (1
00) Claim No. (1)
The device described in section 2). (14) The H1 measurement device (31) that measures the denier value is
A flat extension (104) integral with the lifting plate (11)
), said precision meter comprising a container (101) for receiving a controlled length of thread (46) and generating a signal in response to successive measurements. and an output device (105) for performing statistical processing and storage of the measurement results, the signal being transmitted to a central processing unit for statistical processing and storage of the measurement results. A device according to scope paragraph (9). (15) a second module is designed to measure the twist or elastic recovery force of at least one specimen and is supported by a stepper motor (35) and is It is also rotated in the direction,
A device (34) consisting of a forceps (36) for holding one end of a thread test piece, a forceps (38) and a capacitor (11);
0) and a device (37) along a vertical opening (40) provided in the lifting plate (11).
7) A mechanical device for moving the device upward. (16) A mechanical device that moves the device (37) upward,
a stepper motor (120), rotated by the stepper motor and coupled to the device (37);
Device according to claim 15, characterized in that it consists of a vertical screw (114) for vertically displacing it. (17) The device according to claim (9), characterized in that the measured yarn test piece is automatically aspirated by the device (106). (18) The yarn test piece is divided into two areas by the deflector (9), into a first area when measured with the first module and a second area when measured with the second module. The device according to claim 9, characterized in that the device is distributed to any of the regions. (19) The yarn test piece is placed between a rotating disk (18) and two rails (23) (
24), a guide member (22) slidably mounted along the guide member, a stem (21) slidable on said guide member, and a cutting forceps attached to the free end of the stem (21); The operating arm (20) supporting (29)
10. The device according to claim 9, wherein the device is lifted from the substrate, moved toward a measuring device, and cut into a predetermined length. (20) A bobbin (44) of the thread to be measured is held by a plurality of stems (43) supported by a body (41) forming a stand or a rake, and said thread is
Device according to claim 9, characterized in that it is aspirated by a suction tube (45) and driven into the quality control device via a flexible tube (16).